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[BATTC] Make input buffer on IOCTL_BATTERY_QUERY_TAG optional

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In that case, don't wait to get battery tag.
This commit is contained in:
Hervé Poussineau 2024-02-01 09:57:35 +01:00
parent 385ac5d4d2
commit 6b5ee5ccc7
1 changed files with 2 additions and 2 deletions
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4
drivers/battery/battc/battc.c
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@ -214,14 +214,14 @@ BatteryClassIoctl(PVOID ClassData,
switch (IrpSp->Parameters.DeviceIoControl.IoControlCode) switch (IrpSp->Parameters.DeviceIoControl.IoControlCode)
{ {
case IOCTL_BATTERY_QUERY_TAG: case IOCTL_BATTERY_QUERY_TAG:
if (IrpSp->Parameters.DeviceIoControl.InputBufferLength < sizeof(ULONG) || if ((IrpSp->Parameters.DeviceIoControl.InputBufferLength != sizeof(ULONG) && IrpSp->Parameters.DeviceIoControl.InputBufferLength != 0) ||
IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(ULONG)) IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(ULONG))
{ {
Status = STATUS_BUFFER_TOO_SMALL; Status = STATUS_BUFFER_TOO_SMALL;
break; break;
} }
WaitTime = *(PULONG)Irp->AssociatedIrp.SystemBuffer; WaitTime = IrpSp->Parameters.DeviceIoControl.InputBufferLength == sizeof(ULONG) ? *(PULONG)Irp->AssociatedIrp.SystemBuffer : 0;
Timeout.QuadPart = Int32x32To64(WaitTime, -1000); Timeout.QuadPart = Int32x32To64(WaitTime, -1000);